Tutorial: Controlling an LED with a Button (Raspberry Pi) - YouTube
Amazon.com: EG STARTS 5 Piece 24mm Full Color LED Illuminated Push Button Built-in Switch 5V Buttons for Arcade Joystick Games Mame Jamma Raspberry Pi 2 : Video Games
Raspberry Pi Tutorial: How to use push button (en) - Ardumotive Arduino Greek Playground
Amazon.com: MyElectronics 4 pcs.'Snap-in' momentary Push Button Switch with a Blue LED Ring 3-9V for Raspberry Pi : Electronics
Controlling an LED | Button switches, Scratch 3, and Raspberry Pi 4 | Scratch | Coding projects for kids and teens
Raspberry Pi LED Blueprints
16mm Illuminated Pushbutton - Red Momentary : ID 1439 : $1.50 : Adafruit Industries, Unique & fun DIY electronics and kits
How to Set Up Buttons and Switches on the Raspberry Pi - Circuit Basics
Turning Raspberry Pi into a PLC - Adding a pushbutton